SCIURUS. 71 



d. Sciurus poliopus senex Nelson. 



Sciurus poliopus senex Nelson, Proc. Biol. Soc. Wash., xvii, 1904, 

 p. 148. 

 La Salada Squirrel. 



Type locality. La Salada, 40 miles south of Uruapan, southern 

 part of the State of Michoacan, Mexico. 



Geogr. Distr. Valley of the Balsas River, below 4,000 feet; in 

 central and southern part of the State of Michoacan and adjacent parts 

 of the State of Guerrero, Mexico. 



Genl. Char. Like S. p. nemoralis, but paler; nuchal patch more 

 yellowish; rump patch less distinct; rostrum heavier; braincase nar- 

 rower, more constricted posteriorly. 



Color. Top of head iron gray ; nape ochraceous and black mixed ; 

 rest of back pale grizzled gray ; sides of body paler, under parts white ; 

 tail above black washed with white, beneath dull gray bordered with 

 blackish, and edged with white; top of feet white. 



Measurements. Total length, 543 ; tail vertebrae, 275 ; hind foot, 69. 



e. Sciurus poliopus cerincalis (Allen). 



Sciurus leucops Allen, Mon. N. Am. Rod., 1877, p. 753. (nee 



Gray.) 

 Sciurus variegatus Alston, Biol. Centr. Amer., Mamm., i, 1880, p. 



127. (nee Erxl.) 

 Sciurus aureogaster leucops Allen, Bull. Am. Mus. Nat. Hist. N. Y., 



1889, p. 166. 

 Sciurus cervicalis Allen, Bull. Am. Mus. Nat. Hist. N. Y.. 1890, 



p. 183. 

 Sciurus wagneri cervicalis Allen, Bull. Am. Mus. Nat. Hist. N. Y., 



1898, p. 454. 



Sciurus poliopus cervicalis Nelson, Proc. Wash. Acad. Scien., i, 



1899, p. 51. Elliot, Mamm. Middle Amer. & W. Indies. F. 

 C. M. Pub., IV Pt. I, 1904, p. 119. Zool. Ser, 



CoLiMA Mountain Squirrel. 



Type locality. Hacienda San Marcos, Tonila, State of Jalisco, 

 at east base of Sierra Nevada de Colima, Mexico. 



Geogr. Distr. From the Sierra Nevada de Colima, along the high 

 mountains north to Ameca, State of Jalisco, and east into the western 

 part of the State of Michoacan, Mexico. Altitude, 6,000 to 12,000 

 feet, and down occasionally to 4,000 feet. 



/. Sciurus poliopus colimensis (Nelson). 



Sciurus albipes colimensis Nelson, Proc. Biol. Soc. Wash., xii, 

 1898, p. ^152. 



